? on Probiotics

Not to be gross, but have any of you had problems with probiotics binding you up? I was on Probiosyn which is similar to Primal Defense, and I have become so bound up. It was like when I first started it, I was going 3-4 times and then it just got less and less over a couple of months. I think I have heard mention of this on this board before. Sorry, don't mean to be gross.